Fitbit just announced the top 20 fittest cities in America based on user data, and while there are some towns on the list that seem consistently active, there are some interesting surprises, too. So if you've been diligent about wearing your tracker on a daily basis, you may have unknowingly given your hometown a boost.

Fitbit compiled data from its 10 million users across the United States in 2015 to determine which cities stood out for their fitness routines and healthy lifestyles–think average number of steps, calories burned, active minutes, resting heart rate, and sleep duration. So it's not just about your walking frequency, even though that may come to mind first when you think "fitness tracker data." Getting enough sleep is definitely a major factor in fitness levels, too.

Curious which cities topped the list? These are the cities that rank highest in overall fitness levels according to the Fitbit data:

Madison, WI

Minneapolis, MN

Spokane, WA

Boston, MA

Portland, OR

Grand Rapids, MI

Lincoln, NE

San Francisco, CA

Seattle, WA

Washington D.C.

Sioux Falls, SD

Milwaukee, WI

Chicago, IL

Denver, CO

Des Moines, IA

Philadelphia, PA

New York, NY

Omaha, NE

Pittsburgh, PA

Boise, ID

Of course, it's important to remember that this isn't the be-all, end-all list of the fittest cities in the United States—it's just the cities with the highest fitness levels among residents that are Fitbit users.

So if your home isn't on here, don't sweat it (or, y'know, keep sweating it, exercise-wise). And if it is, go ahead and rock that hometown pride! You pretty much deserve a key to the city for this, right? According to Fitbit, all of the cities on the list have residents (or visitors) who take part in high levels of activity on a day-to-day basis—and you could be one of them.